Which of the following is the most appropriate method for collecting urine for culture in a case of vesicovaginal fistula?

Ureteric catheterisation is the best method of collecting urine for culture in a case of vesico-vaginal fistula. Second best method of collection of urine is supra pubic aspiration, which needs a full bladder and is not possible in this case. Collection of urine sterile speculum and midstream clean catch leads to contamination of urine. So by exclusion, the best answer is collection of urine using a foley's catheter. Ref: Textbook of Gynecology By DC Dutta, 4th Edition, Pages 386-8